Method and device for detecting and locating a reflecting sound source
US6161434A · kind A · utility
Inventors
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2634
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
During a passive initial stage, acoustic signals received by a receiving transducer array are recorded, and the corresponding electric signals are stored. To search for the possible presence of a sound source whose contribution to the signal recorded in the passive initial stage may be faint, window of each electric signal stored in the initial stage is time reversed and amplified to produce excitation signals which are applied to emitting transducers of an array corresponding to that of the receiving transducers. The acoustic echo signals received by the receiving transducers are recorded, and the corresponding electric signals are stored, and can be exploited to detect the possible presence of a reflecting sound source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.